Efeito da solução de própolis no tratamento da superfície radicular de dentes reimplantados

• Ano de defesa: 2008
• Autor(a) principal: Vogt, Beatriz Farias
• Orientador(a): Silva, Daniela Nascimento
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Pontifícia Universidade Católica do Rio Grande do Sul; Porto Alegre
• Palavras-chave em Português: ODONTOLOGIA; PERIODONTIA; PRÓPOLIS; REIMPLANTE DENTÁRIO; AVULSÃO DENTÁRIA
• Link de acesso: http://hdl.handle.net/10923/382

The aim of this study was to determine the effect of treating the tooth root surface with propolis solution in delayed tooth replantation, after chemical or mechanical removal of the periodontal ligament. Thirty-six male Wistar rats were utilized, in which the right upper central incisor was extracted and maintained in dry medium for 15 min. Afterward, six groups were formed: group MP – mechanical removal of the periodontal ligament, by scraping with scalpel, followed by immersion in 6% propolis solution; group MF – mechanical removal of the periodontal ligament, by scraping with scalpel, followed by immersion in 2% sodium fluoride; group M – mechanical removal of the periodontal ligament, by scraping with scalpel; group ChP – chemical removal of the periodontal ligament by immersion in 1% sodium hypochlorite, followed by the topical application of 6% propolis solution; group ChF – chemical removal of the periodontal ligament by immersion in 1% sodium hypochlorite, followed by immersion in 2% sodium fluoride; and group Ch – chemical removal of the periodontal ligament by immersion in 1% sodium hypochlorite. The root canals were filled with calcium hydroxide paste, and the teeth were then implanted. After 60 days, the surgical pieces were submitted to longitudinal sectioning of 6u thickness. Histological slices were prepared and stained with H&E for descriptive microscopic analysis using a light microscope. Chemical removal of the periodontal ligament with 1% sodium hypochlorite caused less areas of tooth resorption filled in by connective tissue, when compared to mechanical removal. The groups treated with 6% propolis solution had characteristics very similar to the repair solution of 2% sodium fluoride. The 6% propolis solution favored tissue repair when utilized to treat the root surface, but did not prevent root resorption and dentoalveolar ankylosis. The 2% sodium fluroride solution (standard solution), when combined with chemical removal of periodontal ligament (ChF) demonstrated a more organized healing process with less dentinal destruction, when compared to 6% propolis solution (ChP), but did not prevent root resorption and dentoalveolar ankylosis, too. Root resorption present in group MP was more linear when compared with that in group MF which showed greater dentinal invasion.